SkyDrive seems to have stopped syncing photos with my Nokia Lumia 900.  The last time it synced was September 8th.  All other functions of SkyDrive sync fine wirelessly, and I created a test appointment on the calendar on my phone and it showed up immediately in my Outlook calendar on my pc and the calendar in SkyDrive.  The Lumia runs Windows Phone 7.8 and I run Windows 7 on my pc.  I have nearly 7GB of storage available on my SkyDrive.  I haven't added any apps or done anything to the phone, and I don't want to do a hard reset on the phone either.

Has anyone else had issues with photos not syncing with a similar phone, and can you offer any help?

Many thanks.